You cannot set an accordion pane's (C1AccordionItem) Content property to more than one control at a time. However, you can circumvent this issue by adding a panel-based control that can accept more than one control, such as a StackPanel control, to the content area of the accordion pane. When you add multiple controls to the panel-based control, each one will appear within the accordion pane's content area.
This topic assumes that you have added a C1Accordion control with at least one C1AccordionItem item to your project.
To add multiple controls to the content area, complete these steps:
XAML Copy Code <c1ext:C1AccordionItem.Content> <StackPanel> <TextBlock Text="1st TextBlock"/> <TextBlock Text="2nd TextBlock"/> <TextBlock Text="3rd TextBlock"/> </StackPanel> </c1ext:C1AccordionItem.Content>